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magnum/src/ImageFormat.h

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Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
#ifndef Magnum_ImageFormat_h
#define Magnum_ImageFormat_h
/*
This file is part of Magnum.
Copyright © 2010, 2011, 2012, 2013 Vladimír Vondruš <mosra@centrum.cz>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
/** @file
* @brief Enum Magnum::ImageFormat, Magnum::ImageType
*/
#include "Magnum.h"
#include "OpenGL.h"
#include "magnumVisibility.h"
namespace Magnum {
/**
@brief Format of image data
Note that some formats can be used only for framebuffer reading (using
AbstractFramebuffer::read()) and some only for texture data (using Texture::setImage()
and others).
Renamed ImageWrapper to ImageReference. Better reflect what the class is actually about.
13 years ago
@see Image, ImageReference, BufferImage, Trade::ImageData
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
*/
enum class ImageFormat: GLenum {
/**
* Floating-point red channel.
* @requires_gles30 For texture data only, extension @es_extension{EXT,texture_rg}.
* @requires_es_extension For framebuffer reading, extension @es_extension{EXT,texture_rg}.
*/
#ifndef MAGNUM_TARGET_GLES2
Red = GL_RED,
#else
Red = GL_RED_EXT,
#endif
#ifndef MAGNUM_TARGET_GLES
/**
* Floating-point green channel.
* @requires_gl Only @ref Magnum::ImageFormat "ImageFormat::Red" is
* available in OpenGL ES.
*/
Green = GL_GREEN,
/**
* Floating-point blue channel.
* @requires_gl Only @ref Magnum::ImageFormat "ImageFormat::Red" is
* available in OpenGL ES.
*/
Blue = GL_BLUE,
Added ES2-only support for GL_LUMINANCE{,_ALPHA}. It is deprecated, but many ES2 implementations don't support EXT_texture_rg, thus this is the only way to have single- and two-component textures without wasting precious memory. The enum value isn't exposed on desktop OpenGL and ES3. GL_ALPHA is not supported, as it doesn't bring any new functionality (it is also single-component and thus can be interchanged with GL_LUMINANCE).
13 years ago
#endif
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
Added ES2-only support for GL_LUMINANCE{,_ALPHA}. It is deprecated, but many ES2 implementations don't support EXT_texture_rg, thus this is the only way to have single- and two-component textures without wasting precious memory. The enum value isn't exposed on desktop OpenGL and ES3. GL_ALPHA is not supported, as it doesn't bring any new functionality (it is also single-component and thus can be interchanged with GL_LUMINANCE).
13 years ago
#if defined(MAGNUM_TARGET_GLES2) || defined(DOXYGEN_GENERATING_OUTPUT)
/**
* Floating-point luminance channel. The value is used for all RGB
* channels.
* @deprecated Included for compatibility reasons only, use
* @ref Magnum::ImageFormat "ImageFormat::Red" instead.
* @requires_gles20 Not available in ES 3.0 or desktop OpenGL. Use
* @ref Magnum::ImageFormat "ImageFormat::Red" instead.
*/
Luminance = GL_LUMINANCE,
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
#endif
/**
* Floating-point red and green channel.
* @requires_gl30 %Extension @extension{ARB,texture_rg} and @extension{EXT,texture_integer}
* @requires_gles30 For texture data only, extension @es_extension{EXT,texture_rg}.
* @requires_es_extension For framebuffer reading, extension @es_extension{EXT,texture_rg}.
*/
#ifndef MAGNUM_TARGET_GLES2
RG = GL_RG,
#else
RG = GL_RG_EXT,
#endif
Added ES2-only support for GL_LUMINANCE{,_ALPHA}. It is deprecated, but many ES2 implementations don't support EXT_texture_rg, thus this is the only way to have single- and two-component textures without wasting precious memory. The enum value isn't exposed on desktop OpenGL and ES3. GL_ALPHA is not supported, as it doesn't bring any new functionality (it is also single-component and thus can be interchanged with GL_LUMINANCE).
13 years ago
#if defined(MAGNUM_TARGET_GLES2) || defined(DOXYGEN_GENERATING_OUTPUT)
/**
* Floating-point luminance and alpha channel. First value is used for all
* RGB channels, second value is used for alpha channel.
* @deprecated Included for compatibility reasons only, use
* @ref Magnum::ImageFormat "ImageFormat::RG" instead.
* @requires_gles20 Not available in ES 3.0 or desktop OpenGL. Use
* @ref Magnum::ImageFormat "ImageFormat::RG" instead.
*/
LuminanceAlpha = GL_LUMINANCE_ALPHA,
#endif
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
/**
* Floating-point RGB.
* @requires_gl Can't be used for framebuffer reading in OpenGL ES.
*/
RGB = GL_RGB,
/** Floating-point RGBA. */
RGBA = GL_RGBA,
#ifndef MAGNUM_TARGET_GLES
/**
* Floating-point BGR.
* @requires_gl Only RGB component ordering is available in OpenGL ES.
*/
BGR = GL_BGR,
#endif
#ifndef MAGNUM_TARGET_GLES3
/**
* Floating-point BGRA.
* @requires_es_extension %Extension @es_extension{EXT,read_format_bgra}
* for framebuffer reading, extension @es_extension{APPLE,texture_format_BGRA8888}
* or @es_extension{EXT,texture_format_BGRA8888} for texture data.
*/
#ifndef MAGNUM_TARGET_GLES
BGRA = GL_BGRA,
#else
BGRA = GL_BGRA_EXT,
#endif
#endif
#ifndef MAGNUM_TARGET_GLES2
/**
* Integer red channel.
* @requires_gl30 %Extension @extension{EXT,texture_integer}
* @requires_gles30 Only floating-point image data are available in OpenGL
* ES 2.0.
*/
RedInteger = GL_RED_INTEGER,
#ifndef MAGNUM_TARGET_GLES
/**
* Integer green channel.
* @requires_gl30 %Extension @extension{EXT,texture_integer}
* @requires_gl Only @ref Magnum::ImageFormat "ImageFormat::RedInteger"
* is available in OpenGL ES 3.0, only floating-point image data are
* available in OpenGL ES 2.0.
*/
GreenInteger = GL_GREEN_INTEGER,
/**
* Integer blue channel.
* @requires_gl30 %Extension @extension{EXT,texture_integer}
* @requires_gl Only @ref Magnum::ImageFormat "ImageFormat::RedInteger" is
* available in OpenGL ES 3.0, only floating-point image data are
* available in OpenGL ES 2.0.
*/
BlueInteger = GL_BLUE_INTEGER,
#endif
/**
* Integer red and green channel.
* @requires_gl30 %Extension @extension{ARB,texture_rg} and @extension{EXT,texture_integer}
* @requires_gl Can't be used for framebuffer reading in OpenGL ES.
* @requires_gles30 For texture data only, only floating-point image data
* are available in OpenGL ES 2.0.
*/
RGInteger = GL_RG_INTEGER,
/**
* Integer RGB.
* @requires_gl30 %Extension @extension{EXT,texture_integer}
* @requires_gl Can't be used for framebuffer reading in OpenGL ES.
* @requires_gles30 For texture data only, only floating-point image data
* are available in OpenGL ES 2.0.
*/
RGBInteger = GL_RGB_INTEGER,
/**
* Integer RGBA.
* @requires_gl30 %Extension @extension{EXT,texture_integer}
* @requires_gles30 Only floating-point image data are available in OpenGL
* ES 2.0.
*/
RGBAInteger = GL_RGBA_INTEGER,
#ifndef MAGNUM_TARGET_GLES
/**
* Integer BGR.
* @requires_gl30 %Extension @extension{EXT,texture_integer}
* @requires_gl Only @ref Magnum::ImageFormat "ImageFormat::RGBInteger" is
* available in OpenGL ES 3.0, only floating-point image data are
* available in OpenGL ES 2.0.
*/
BGRInteger = GL_BGR_INTEGER,
/**
* Integer BGRA.
* @requires_gl30 %Extension @extension{EXT,texture_integer}
* @requires_gl Only @ref Magnum::ImageFormat "ImageFormat::RGBAInteger" is
* available in OpenGL ES 3.0, only floating-point image data are
* available in OpenGL ES 2.0.
*/
BGRAInteger = GL_BGRA_INTEGER,
#endif
#endif
/**
* Depth component.
* @requires_gles30 For texture data only, extension @es_extension{ANGLE,depth_texture}.
* @requires_es_extension For framebuffer reading only, extension
* @es_extension2{NV,read_depth,GL_NV_read_depth_stencil}.
*/
DepthComponent = GL_DEPTH_COMPONENT,
#ifndef MAGNUM_TARGET_GLES3
/**
Support for ARB_texture_stencil8.
13 years ago
* Stencil index.
* @requires_gl44 %Extension @extension{ARB,texture_stencil8} for texture
* data, otherwise for framebuffer reading only.
* @requires_es_extension %Extension @es_extension2{NV,read_stencil,GL_NV_read_depth_stencil},
* for framebuffer reading only.
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
* @todo Where to get GL_STENCIL_INDEX in ES?
*/
#ifndef MAGNUM_TARGET_GLES
StencilIndex = GL_STENCIL_INDEX,
#else
StencilIndex = 0x1901,
#endif
#endif
/**
* Depth and stencil.
Use proper ARB_framebuffer_object extension. Separated EXT_framebuffer_object, EXT_framebuffer_blit, EXT_framebuffer_multisample and EXT_packed_depth_stencil don't have the same functionality as ARB_framebuffer_object (e.g. missing GL_FRAMEBUFFER_UNDEFINED in glCheckFramebufferStatus()) and separated read/draw binding is only in EXT_framebuffer_blit, which complicates the internals. Checked with Mesa 8/9 and OpenGL 2.1, current one has ARB_framebuffer_object and also all these four, Mesa 7.7 didn't have EXT_framebuffer_multisample, but that's a long time ago, so not supporting these separate extensions shouldn't be an issue. The problem with unavailable separate binding points remains on OpenGL ES 2.0, there are three different extensions bringing that functionality, thus the code managing the available binding points remains there.
13 years ago
* @requires_gl30 %Extension @extension{ARB,framebuffer_object}
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
* @requires_gles30 For texture data only, extension @es_extension{OES,packed_depth_stencil}.
* @requires_es_extension For framebuffer reading only, extension
* @es_extension2{NV,read_depth_stencil,GL_NV_read_depth_stencil}.
*/
#ifndef MAGNUM_TARGET_GLES2
DepthStencil = GL_DEPTH_STENCIL
#else
DepthStencil = GL_DEPTH_STENCIL_OES
#endif
};
/**
@brief Type of image data
Note that some formats can be used only for framebuffer reading (using
AbstractFramebuffer::read()) and some only for texture data (using Texture::setImage()
and others).
Renamed ImageWrapper to ImageReference. Better reflect what the class is actually about.
13 years ago
@see Image, ImageReference, BufferImage, Trade::ImageData
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
*/
enum class ImageType: GLenum {
/** Each component unsigned byte. */
UnsignedByte = GL_UNSIGNED_BYTE,
#ifndef MAGNUM_TARGET_GLES2
/**
* Each component signed byte.
* @requires_gl Can't be used for framebuffer reading in OpenGL ES.
* @requires_gles30 For texture data only, only @ref Magnum::ImageType "ImageType::UnsignedByte"
* is available in OpenGL ES 2.0.
*/
Byte = GL_BYTE,
#endif
/**
* Each component unsigned short.
* @requires_gl Can't be used for framebuffer reading in OpenGL ES.
* @requires_gles30 For texture data only, extension @es_extension{OES,depth_texture}
* or @es_extension{ANGLE,depth_texture}.
*/
UnsignedShort = GL_UNSIGNED_SHORT,
#ifndef MAGNUM_TARGET_GLES2
/**
* Each component signed short.
* @requires_gl Can't be used for framebuffer reading in OpenGL ES.
* @requires_gles30 For texture data only, only @ref Magnum::ImageType "ImageType::UnsignedShort"
* is available in OpenGL ES 2.0.
*/
Short = GL_SHORT,
#endif
/**
* Each component unsigned int.
* @requires_gles30 Can't be used for framebuffer reading in OpenGL ES 2.0.
* @requires_gles30 For texture data only, extension @es_extension{OES,depth_texture}
* or @es_extension{ANGLE,depth_texture}.
*/
UnsignedInt = GL_UNSIGNED_INT,
#ifndef MAGNUM_TARGET_GLES2
/**
* Each component signed int.
* @requires_gles30 Only @ref Magnum::ImageType "ImageType::UnsignedInt"
* is available in OpenGL ES 2.0.
*/
Int = GL_INT,
#endif
/**
* Each component half float.
* @requires_gl30 %Extension @extension{NV,half_float} / @extension{ARB,half_float_pixel}
* @requires_gles30 For texture data only, extension
* @es_extension2{OES,texture_half_float,OES_texture_float}.
*/
#ifndef MAGNUM_TARGET_GLES2
HalfFloat = GL_HALF_FLOAT,
#else
HalfFloat = GL_HALF_FLOAT_OES,
#endif
/**
* Each component float.
* @requires_gles30 For texture data only, extension @es_extension{OES,texture_float}.
*/
Float = GL_FLOAT,
#ifndef MAGNUM_TARGET_GLES
/**
* RGB, unsigned byte, red and green component 3bit, blue component 2bit.
* @requires_gl Packed 12bit types are not available in OpenGL ES.
*/
UnsignedByte332 = GL_UNSIGNED_BYTE_3_3_2,
/**
* BGR, unsigned byte, red and green component 3bit, blue component 2bit.
* @requires_gl Packed 12bit types are not available in OpenGL ES.
*/
UnsignedByte233Rev = GL_UNSIGNED_BYTE_2_3_3_REV,
#endif
/**
* RGB, unsigned byte, red and blue component 5bit, green 6bit.
* @requires_gl Can't be used for framebuffer reading in OpenGL ES.
*/
UnsignedShort565 = GL_UNSIGNED_SHORT_5_6_5,
#ifndef MAGNUM_TARGET_GLES
/**
* BGR, unsigned short, red and blue 5bit, green 6bit.
* @requires_gl Only @ref Magnum::ImageType "ImageType::RGB565" is
* available in OpenGL ES.
*/
UnsignedShort565Rev = GL_UNSIGNED_SHORT_5_6_5_REV,
#endif
/**
* RGBA, unsigned short, each component 4bit.
* @requires_gl Can't be used for framebuffer reading in OpenGL ES.
*/
UnsignedShort4444 = GL_UNSIGNED_SHORT_4_4_4_4,
#ifndef MAGNUM_TARGET_GLES3
/**
* ABGR, unsigned short, each component 4bit.
* @requires_es_extension For framebuffer reading only, extension
* @es_extension{EXT,read_format_bgra}.
*/
#ifndef MAGNUM_TARGET_GLES
UnsignedShort4444Rev = GL_UNSIGNED_SHORT_4_4_4_4_REV,
#else
UnsignedShort4444Rev = GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT,
#endif
#endif
/**
* RGBA, unsigned short, each RGB component 5bit, alpha component 1bit.
* @requires_gl Can't be used for framebuffer reading in OpenGL ES.
*/
UnsignedShort5551 = GL_UNSIGNED_SHORT_5_5_5_1,
#ifndef MAGNUM_TARGET_GLES3
/**
* ABGR, unsigned short, each RGB component 5bit, alpha component 1bit.
* @requires_es_extension For framebuffer reading only, extension
* @es_extension{EXT,read_format_bgra}.
*/
#ifndef MAGNUM_TARGET_GLES
UnsignedShort1555Rev = GL_UNSIGNED_SHORT_1_5_5_5_REV,
#else
UnsignedShort1555Rev = GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT,
#endif
#endif
#ifndef MAGNUM_TARGET_GLES
/**
* RGBA, unsigned int, each component 8bit.
* @requires_gl Use @ref Magnum::ImageType "ImageType::UnsignedByte" in
* OpenGL ES instead.
*/
UnsignedInt8888 = GL_UNSIGNED_INT_8_8_8_8,
/**
* ABGR, unsigned int, each component 8bit.
* @requires_gl Only RGBA component ordering is available in OpenGL ES, see
* @ref Magnum::ImageType "ImageType::UnsignedInt8888" for more
* information.
*/
UnsignedInt8888Rev = GL_UNSIGNED_INT_8_8_8_8_REV,
/**
* RGBA, unsigned int, each RGB component 10bit, alpha component 2bit.
* @requires_gl Only @ref Magnum::ImageType "ImageType::UnsignedInt2101010Rev"
* is available in OpenGL ES.
*/
UnsignedInt1010102 = GL_UNSIGNED_INT_10_10_10_2,
#endif
/**
* ABGR, unsigned int, each RGB component 10bit, alpha component 2bit.
* @requires_gles30 Can't be used for framebuffer reading in OpenGL ES 2.0.
* @requires_gles30 For texture data only, extension
* @es_extension{EXT,texture_type_2_10_10_10_REV}.
*/
#ifndef MAGNUM_TARGET_GLES2
UnsignedInt2101010Rev = GL_UNSIGNED_INT_2_10_10_10_REV,
#else
UnsignedInt2101010Rev = GL_UNSIGNED_INT_2_10_10_10_REV_EXT,
#endif
#ifndef MAGNUM_TARGET_GLES2
/**
* BGR, unsigned int, red and green 11bit float, blue 10bit float.
* @requires_gl30 %Extension @extension{EXT,packed_float}
* @requires_gles30 Floating-point types are not available in OpenGL ES
* 2.0.
*/
UnsignedInt10F11F11FRev = GL_UNSIGNED_INT_10F_11F_11F_REV,
/**
* BGR, unsigned int, each component 9bit + 5bit exponent.
* @requires_gl30 %Extension @extension{EXT,texture_shared_exponent}
* @requires_gles30 Only 8bit and 16bit types are available in OpenGL ES
* 2.0.
*/
UnsignedInt5999Rev = GL_UNSIGNED_INT_5_9_9_9_REV,
#endif
/**
* Unsigned int, depth component 24bit, stencil index 8bit.
Use proper ARB_framebuffer_object extension. Separated EXT_framebuffer_object, EXT_framebuffer_blit, EXT_framebuffer_multisample and EXT_packed_depth_stencil don't have the same functionality as ARB_framebuffer_object (e.g. missing GL_FRAMEBUFFER_UNDEFINED in glCheckFramebufferStatus()) and separated read/draw binding is only in EXT_framebuffer_blit, which complicates the internals. Checked with Mesa 8/9 and OpenGL 2.1, current one has ARB_framebuffer_object and also all these four, Mesa 7.7 didn't have EXT_framebuffer_multisample, but that's a long time ago, so not supporting these separate extensions shouldn't be an issue. The problem with unavailable separate binding points remains on OpenGL ES 2.0, there are three different extensions bringing that functionality, thus the code managing the available binding points remains there.
13 years ago
* @requires_gl30 %Extension @extension{ARB,framebuffer_object}
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
* @requires_gles30 For texture data only, extension @es_extension{OES,packed_depth_stencil}.
*/
Minor cleanup in image and texture format enums. Removed hierarchic and confusing `#ifdef`s.
13 years ago
#ifndef MAGNUM_TARGET_GLES2
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
UnsignedInt248 = GL_UNSIGNED_INT_24_8,
Minor cleanup in image and texture format enums. Removed hierarchic and confusing `#ifdef`s.
13 years ago
#else
UnsignedInt248 = GL_UNSIGNED_INT_24_8_OES,
#endif
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
Minor cleanup in image and texture format enums. Removed hierarchic and confusing `#ifdef`s.
13 years ago
#ifndef MAGNUM_TARGET_GLES2
Moved texture and image formats out of the classes. Advantages: * The enums were large (600-800 lines) and they polluted the header, now they are in separate files (except for BufferTexture, which has the enum small enough to be left in the same file). * Image classes now don't need to include OpenGL headers, as they were needed only for the enum values. With advantage of C++11's forward enum declarations there is no need to include the enum headers anywhere in implementation, only when particular values are needed. * The values are now less verbose: AbstractTexture::InternalFormat::RGB8 // before TextureFormat::RGB8 // now * Resolved another "trivial choice" problem (thanks @JanDupal for introducing this term to me): how to specify the format if there are ten ways to do it (some being massively confusing): Image2D::Format f = AbstractImage::Format::RGB; // too long... Image2D::Format f = Image3D::Format::RGBA; // why 3D? this works? Image2D::Format f = BufferImage1D::Format::RGBA; // wat? It is even worse (and more verbose) with textures: Texture2D::InternalFormat f = CubeMapTextureArray::InternalFormat::RGB8; // this is allowed? To have consistent naming this change was done also with BufferTexture::InternalFormat (now BufferTextureFormat), although there were no trivial choice issues and the enum isn't too large. But at least it is now less typing.
13 years ago
/**
* Float + unsigned int, depth component 32bit float, 24bit gap, stencil
* index 8bit.
* @requires_gl30 %Extension @extension{ARB,depth_buffer_float}
* @requires_gles30 For texture data only, only @ref Magnum::ImageType "ImageType::UnsignedInt248"
* is available in OpenGL ES 2.0.
*/
Float32UnsignedInt248Rev = GL_FLOAT_32_UNSIGNED_INT_24_8_REV
#endif
};
/** @debugoperator{ImageFormat} */
Debug MAGNUM_EXPORT operator<<(Debug debug, ImageFormat value);
/** @debugoperator{ImageFormat} */
Debug MAGNUM_EXPORT operator<<(Debug debug, ImageType value);
}
#endif